Estimate which is bigger : 100 + 25 or 90 + 15

If we multiply a number by the number itself, we get the square of the number and square root of a number is a value, which on multiplication by itself gives the original number. For example, if m and n are natural numbers such that m can be expressed as n 2 , that is m = n 2 or we can expressed as m = n × n Thus, we get 100 + 25 = 10 + 5 = 15 And, 90 + 15 = 9 . 5 + 3 . 9 = 13 . 4 So, the bigger is 100 + 25

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Cambridge Lower Secondary Maths Stage 9: Student's Book>Number and Calculation>Chapter 11 - Square Roots, Cube Roots and Calculation>Think about

Michele Conway, Belle Cottingham, Alastair Duncombe and, Amanda George Solutions for Exercise 3: Think about

Author:Michele Conway, Belle Cottingham, Alastair Duncombe & Amanda George

Michele Conway Mathematics Solutions for Exercise - Michele Conway, Belle Cottingham, Alastair Duncombe and, Amanda George Solutions for Exercise 3: Think about

Attempt the practice questions from Exercise 3: Think about with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Maths Stage 9: Student's Book solutions are prepared by Experienced Embibe Experts.